Middle schooler Ben spends his free time watching sci-fi films, playing video games and reading comic books. Surprisingly, his affinity for all things fantastical yields a real result – when he has a vivid dream about technology, his prodigy best friend Wolfgang manages to create a working spacecraft. Joined by their buddy Darren, the boys take off into outer space and encounter some very odd extraterrestrial life.
Practical Effects
The homemade spacecraft still looks more real than most CGI.
Acting
River Phoenix's weird intense energy steals every scene.
Direction
Joe Dante's creature-feature DNA peeking through family-film constraints.

Director
Joe Dante
Trivia, insights & behind the scenes
Industrial Light & Magic rushed the alien effects; Dante hated them and the theatrical cut suffered. He restored his preferred version in 2020.
This was River Phoenix's first major role and Ethan Hawke's film debut—two legends born from a movie nobody saw.